Study on behavior of directional radiation heat transfer in a billet heating furnace
The directional radiation heat transfer characteristics in a billet heating test furnace were studied by numerical simulation on FLUENT 15.0 platform.The results show that installing directional radiators at the furnace top can not only improve the average heat transfer flux on the billet surfaces,but also ontributes to a uniform temperature distribution within the furnace,reducing the low-temperature zones and increasing the high-temperature zones,thereby benefiting the heating quality of the billets.The installation quantity of directional radiators has an impact on the average furnace temperature,flue gas flow field,surface heat flux of the billet and exhaust gas temperature,but the impact magnitude gradually decreases with the increase of the installation quantity of directional radiators.
heating furnacedirectional radiatorgas radiationheat transfer on billet surface
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